[gtk+/wip/aruiz/nullable-annotations] nullable annotations: gtk_assistante_get_nth_page gtk_builder_get_application gtk_builder_get_

[Alberto Ruiz <aruiz src gnome org>]

commit a855c6dda39e1108e9e1c8b981e80779b956e354
Author: Alberto Ruiz <aruiz gnome org>
Date:   Wed Aug 19 01:33:04 2015 +0100

    nullable annotations:
      gtk_assistante_get_nth_page
      gtk_builder_get_application
      gtk_builder_get_object
      gtk_builder_lookup_callback_symbol
      gtk_button_get_image
      GtkCallendarDetailFunc

 gtk/gtkassistant.c |    2 +-
 gtk/gtkbuilder.c   |    6 +++---
 gtk/gtkbutton.c    |    3 ++-
 gtk/gtkcalendar.h  |    4 ++--
 4 files changed, 8 insertions(+), 7 deletions(-)
---
diff --git a/gtk/gtkassistant.c b/gtk/gtkassistant.c
index b6d2d82..2d9ca4d 100644
--- a/gtk/gtkassistant.c
+++ b/gtk/gtkassistant.c
@@ -1675,7 +1675,7 @@ gtk_assistant_get_n_pages (GtkAssistant *assistant)
  *
  * Returns the child widget contained in page number @page_num.
  *
- * Returns: (transfer none): the child widget, or %NULL
+ * Returns: (nullable) (transfer none): the child widget, or %NULL
  *     if @page_num is out of bounds
  *
  * Since: 2.10
diff --git a/gtk/gtkbuilder.c b/gtk/gtkbuilder.c
index 02c2cda..dcee943 100644
--- a/gtk/gtkbuilder.c
+++ b/gtk/gtkbuilder.c
@@ -1425,7 +1425,7 @@ gtk_builder_add_objects_from_string (GtkBuilder   *builder,
  * Gets the object named @name. Note that this function does not
  * increment the reference count of the returned object.
  *
- * Returns: (transfer none): the object named @name or %NULL if
+ * Returns: (nullable) (transfer none): the object named @name or %NULL if
  *    it could not be found in the object tree.
  *
  * Since: 2.12
@@ -2435,7 +2435,7 @@ gtk_builder_add_callback_symbols (GtkBuilder  *builder,
  * or for any case that one might be cusomizing signal connections
  * using gtk_builder_connect_signals_full()
  *
- * Returns: The callback symbol in @builder for @callback_name, or %NULL
+ * Returns (nullable): The callback symbol in @builder for @callback_name, or %NULL
  *
  * Since: 3.10
  */
@@ -2578,7 +2578,7 @@ gtk_builder_set_application (GtkBuilder     *builder,
  * g_application_get_default(). If you want to use another application
  * for constructing proxies, use gtk_builder_set_application().
  *
- * Returns: (transfer none): the application being used by the builder,
+ * Returns: (nullable) (transfer none): the application being used by the builder,
  *     or %NULL
  *
  * Since: 3.10
diff --git a/gtk/gtkbutton.c b/gtk/gtkbutton.c
index 8abbceb..d46fe5e 100644
--- a/gtk/gtkbutton.c
+++ b/gtk/gtkbutton.c
@@ -2664,7 +2664,8 @@ gtk_button_set_image (GtkButton *button,
  * This may have been explicitly set by gtk_button_set_image()
  * or constructed by gtk_button_new_from_stock().
  *
- * Returns: (transfer none): a #GtkWidget or %NULL in case there is no image
+ * Returns: (nullable) (transfer none): a #GtkWidget or %NULL in case
+ *     there is no image
  *
  * Since: 2.6
  */
diff --git a/gtk/gtkcalendar.h b/gtk/gtkcalendar.h
index ad4efcd..28a0514 100644
--- a/gtk/gtkcalendar.h
+++ b/gtk/gtkcalendar.h
@@ -86,8 +86,8 @@ typedef enum
  *
  * Since: 2.14
  *
- * Returns: Newly allocated string with Pango markup with details
- * for the specified day, or %NULL.
+ * Returns (nullable) (transfer full): Newly allocated string with Pango markup
+ *     with details for the specified day or %NULL.
  */
 typedef gchar* (*GtkCalendarDetailFunc) (GtkCalendar *calendar,
                                          guint        year,